E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rating: Thread Rating: 3 votes, 5.00 average. Display Modes
Old 04-27-2013, 09:11 PM   #1
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
blowing cold air when heater is on full blast

Hey everyone,
Can someone tell me why my heater is blowing cold air instead of hot air?
Well first i have a bmw 323i yr 2000 that i bought cash. Well to start it ws running hot but before i let it get to the read zone i shut it down i checked for leaks, but come to find out i needed to replace the thermostat housing and relaced the water pump as well but it contnues to run hot, when i turn he engne, i le it sit for about 30-45 mins at normal temp then about after that time elasps then it starts to go into the red zone, i sthut it down and let it cool. But here is the crazy part after i turn the car off the rad fluid is still cold and as i stated the heater never gets hot even when driving, the top hose gets hot, but the lower hose remains cold what could be causing bese strange events, lets not forget i have changed out the water pump, and thermostat housing, and its still doing the samething. Is it something im doing wrong or didnt do?
jsmith0079646 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 04-27-2013, 09:56 PM   #2
haurelio
Registered User
 
Join Date: Apr 2008
Location: New Jersey
Posts: 1,040
My Ride: 2001 bmw 325i
did you bleed the system?

http://forum.e46fanatics.com/showthread.php?t=914109
__________________
Contact me if you need to unlock your phone.

Also can code your car

Last edited by haurelio; 04-27-2013 at 09:58 PM.
haurelio is offline   Reply With Quote
Old 04-27-2013, 10:47 PM   #3
HacksawMark
OEM ///Member
 
HacksawMark's Avatar
 
Join Date: Oct 2012
Location: Portland, OR
Posts: 1,101
My Ride: 2014 Subaru XV
Yes it sounds like you need to bleed the system properly.
HacksawMark is offline   Reply With Quote
Old 04-27-2013, 11:34 PM   #4
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
I was told that, but i didnt know what the hell they were talking about, if i did this will this also stop the overheating when at idle or in drive mode?
jsmith0079646 is offline   Reply With Quote
Old 04-27-2013, 11:53 PM   #5
HacksawMark
OEM ///Member
 
HacksawMark's Avatar
 
Join Date: Oct 2012
Location: Portland, OR
Posts: 1,101
My Ride: 2014 Subaru XV
Quote:
Originally Posted by jsmith0079646 View Post
I was told that, but i didnt know what the hell they were talking about, if i did this will this also stop the overheating when at idle or in drive mode?
If done properly, it should. You have some air trapped in the system which are causing the problems you are having.
HacksawMark is offline   Reply With Quote
Old 04-28-2013, 12:04 AM   #6
BMWCaptain
Registered User
 
Join Date: Sep 2011
Location: TEXAS - Where I give Real World advice and don't just criticize others. People here need to RESPECT other's opinions!
Posts: 1,674
My Ride: 03 325iT SportWagon
Check your heater control valve too.
__________________
Founding Member of the Club of Dangerous Fanatics

Engine swap, HG, tranny swap, GM & ZF tranny rebuilds, shocks, struts, brakes, WPs, Thermostats, belts, tensioners, fuel pumps, radiators, window regs, hoses, PS pump, Spark Plugs, VCGs, coils, fuel filters, CVVs, VANOS seals, rack, LCABs, Exp. Tanks, OFHGs, RCABs, OP, boots, ABS, GUIDOs, starter, A/C, DISA, Diff, SAP

Ultra Premium Grand 10 Star+ Super Duper BMW-pedic Sport Plus +++
BMWCaptain is offline   Reply With Quote
Old 04-28-2013, 08:57 AM   #7
haurelio
Registered User
 
Join Date: Apr 2008
Location: New Jersey
Posts: 1,040
My Ride: 2001 bmw 325i
It should.
__________________
Contact me if you need to unlock your phone.

Also can code your car
haurelio is offline   Reply With Quote
Old 04-28-2013, 12:17 PM   #8
pawelgawel
Registered User
 
Join Date: Nov 2010
Location: This is LONDON??
Posts: 935
My Ride: 330CI
you need to allow the engine to cool down completerly and allow the tstat to retract (open), then bleed the system properly... massage the lower and upper hoses if you can once in a while
pawelgawel is offline   Reply With Quote
Old 04-28-2013, 01:24 PM   #9
Stinger9
Registered User
 
Join Date: Sep 2011
Location: New York
Posts: 7,846
My Ride: '04 330Ci
OP, is your radiator fan working for sure?

You could have two separate problems.

Last edited by Stinger9; 04-28-2013 at 01:24 PM.
Stinger9 is offline   Reply With Quote
Old 04-28-2013, 05:22 PM   #10
2003silver330i
Registered User
 
Join Date: Feb 2012
Location: N. Las Vegas, NV
Posts: 1,590
My Ride: 03 BMW 330i
Quote:
Originally Posted by jsmith0079646 View Post
I was told that, but i didnt know what the hell they were talking about, if i did this will this also stop the overheating when at idle or in drive mode?
Fingers crossed that the overheating isn't some kind of head issue. My heater wouldn't blow heat either because the water/coolant was exited the tail-pipe due to a head issue but your issue sounds like water/coolant isn't getting into the engine.

Last edited by 2003silver330i; 04-28-2013 at 05:26 PM.
2003silver330i is offline   Reply With Quote
Old 04-28-2013, 09:56 PM   #11
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
How much water was coming from tailpipe and did you exp constant overheating due to that problem? The reason i ask is becuz i saw some water, not a whole lot and it wasnt radiator coolant my father-in- law said that was condensation build up and that i should look at the oil and look for white smoke out the tail pipe. None of those checked out i didnt see no smoke nor did i see milky looking oil.
jsmith0079646 is offline   Reply With Quote
Old 04-28-2013, 10:31 PM   #12
2003silver330i
Registered User
 
Join Date: Feb 2012
Location: N. Las Vegas, NV
Posts: 1,590
My Ride: 03 BMW 330i
I didn't have any normal head issue symptoms from my car as well. However, I did have some condensation with no smoke from the tail pipe, no coolant in the oil, or no oil in the coolant. If you don't have a way of testing your head with either a leak down test or a combustion tester kit than try removing the coolant cap from the expansion tank. When the engine is cold, watch the coolant carefully, and if it rises slowly and starts pouring over once it reaches operating temperature then you have either a cracked head and/or a failed head gasket issue. Good luck.
2003silver330i is offline   Reply With Quote
Old 04-28-2013, 10:42 PM   #13
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
heater blowing cold

Thanx,
I bled the cooling system yesterday and what do u know the heater kicked in, now as far as it overheating i didnt let it run long enuf to see if it would or not cuz i got interrupted, but i will check tomorrow
jsmith0079646 is offline   Reply With Quote
Old 04-28-2013, 10:56 PM   #14
2003silver330i
Registered User
 
Join Date: Feb 2012
Location: N. Las Vegas, NV
Posts: 1,590
My Ride: 03 BMW 330i
Hopefully bleeding the system solved both of your issues.
2003silver330i is offline   Reply With Quote
Old 04-30-2013, 07:03 AM   #15
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
symbols

Hey ppl good morning,
I was wondering who could tell me what this symbol is. Well a symbol came up on my cluster reading yesterday in the shape of a sprocket with the letter i in the middle. This symbol came up in the shift area of the cluster the has the letters representing what gear u in. I'm thinking maybe it has something to do with the tranny, maybe check the fluid, or the fuid is low can someone tell me what that represents,
Thanx in advance.
jsmith0079646 is offline   Reply With Quote
Old 04-30-2013, 07:12 AM   #16
BMWCaptain
Registered User
 
Join Date: Sep 2011
Location: TEXAS - Where I give Real World advice and don't just criticize others. People here need to RESPECT other's opinions!
Posts: 1,674
My Ride: 03 325iT SportWagon
Quote:
Originally Posted by jsmith0079646 View Post
Hey ppl good morning,
I was wondering who could tell me what this symbol is. Well a symbol came up on my cluster reading yesterday in the shape of a sprocket with the letter i in the middle. This symbol came up in the shift area of the cluster the has the letters representing what gear u in. I'm thinking maybe it has something to do with the tranny, maybe check the fluid, or the fuid is low can someone tell me what that represents,
Thanx in advance.
Could be a problem with you DSC. Get your codes read from the car.

If not DSC, then could be transmission.
__________________
Founding Member of the Club of Dangerous Fanatics

Engine swap, HG, tranny swap, GM & ZF tranny rebuilds, shocks, struts, brakes, WPs, Thermostats, belts, tensioners, fuel pumps, radiators, window regs, hoses, PS pump, Spark Plugs, VCGs, coils, fuel filters, CVVs, VANOS seals, rack, LCABs, Exp. Tanks, OFHGs, RCABs, OP, boots, ABS, GUIDOs, starter, A/C, DISA, Diff, SAP

Ultra Premium Grand 10 Star+ Super Duper BMW-pedic Sport Plus +++
BMWCaptain is offline   Reply With Quote
Old 04-30-2013, 09:16 AM   #17
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
symbols

What is a dsc?
jsmith0079646 is offline   Reply With Quote
Old 04-30-2013, 10:09 AM   #18
2003silver330i
Registered User
 
Join Date: Feb 2012
Location: N. Las Vegas, NV
Posts: 1,590
My Ride: 03 BMW 330i
Quote:
Originally Posted by jsmith0079646 View Post
What is a dsc?
Dynamic Stability Control:

This system monitors over- and under steer and adapts engine power and individual brakes to keep the car under control and headed in the intended direction.
2003silver330i is offline   Reply With Quote
Old 05-04-2013, 04:37 PM   #19
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
tranny

Can anyone tell me where do you check the transmission fluidon a 2000 323i?
jsmith0079646 is offline   Reply With Quote
Old 05-04-2013, 04:39 PM   #20
jsmith0079646
Registered User
 
Join Date: Apr 2013
Location: dallas
Posts: 9
My Ride: bmw 323i
tranny

Its maki.g a whining noise
jsmith0079646 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 06:22 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use